Make it possible to enable two-factor authentication based on AuthManager (instead of the current hacky approach of using various login hooks) on the Wikimedia cluster. This involves:
- finishing AuthManager (see subtasks of T89459);
- updating all authentication-related code deployed on the Wikimedia cluster to be compatible (T110282);
- deploying Authmanager on the Wikimedia cluster;
- updating OATHAuth to use AuthManager (T110457).
This is the main Reading Infrastructure goal for 2015-16 Q4.